Machine for washing and rinsing glass meter covers and the like



March 16, 1954 E, BARBER I 2,672,149

MACHINE FDR WASHING AND RINSING GLASS METER COVERS AND THE LIKE FiledJan. 16, 1950 6 Sheets-Sheet l MERLIN E. BARBER INVENTOR.

March 16, 1954 M. E. BARBER MACHINE FOR WASHING AND RINSING GLASS METERCOVERS AND THE LIKE 6 Sheets-Sheet 2 Filed Jan. 16, 1950 March 16, 1954E. BARBER 2,672,149

MACHINE F0 ASHING AND RIN I G GLASS METER COVERS AND THE KE Filed Jan.16, 1950 e Sheets-Sheet 5 I u I MERLIN E. BARBER INVEN TOR.

March 16, 1954 BARBER 2,672,149

MACHINE FOR WASHING AND RINSING GLASS METER COVERS AND THE LIKE FiledJan. 16, 1950 6 Sheets-Sheet 4 MERLIN EBARBER INVENTOR.

March 16, 1954 BARBER 2,672,149

MACHINE FOR WASHING AND RINSING GLASS METER COVERS AND THE LIKE FiledJan. 16, 1950 6 Sheets-Sheet 5 MERLIN EBARBER INVEN TOR.

March 16, 1954 M. E. BARBER MACHINE FOR WASHING AND RINSING GLASS METERCOVERS AND THE LIKE 6 Sheets-Sheet 6 Filed Jan. 16, 1950 MERLIN E.BARBER INVENTOR.

Patented Mar. 16, 1954 MACHINE FOR WASHING AND RINSING GLASS METERCOVERS AND THE LIKE Merlin E. Barber, Decatur, Ill.

Application January 16, 1950, Serial No. 138,786

Claims. (Cl. 134-57) The present invention relates to a machine for masswashing and rinsing of special articles. More particularly thisinvention relates to a machine for washing and rinsing foreignsubstances from glass covers, such as are used for enclosing electricmeters.

Electric meters with a glass cover are often mounted outside and theglass accumulates deposits of dirt from the surrounding atmosphere andother foreign substance. It is important to keep these glass coversreasonably clean and accordingly at intervals these covers are collectedto be washed. The average glass meter cover remains on the meter,whether indoors or outdoors, for periods of from 5 years to years, afterwhich the meter is removed from its mounted location, and taken to thelaboratory for testing, and at such times the meter covers are given athorough cleansing. It is obvious that over such long periods of time,much dirt is collected on the cover, some of which adheres almost beyondthe possibility of being scraped off by a suitable tool.

Heretofore, the glass meter covers have had to be placed in a strippingtank or vat, containing a chemical solution, which may be an Oakitestripping solution, to remain and soak therein for periods of from oneto three days, according to the amount of dirt deposit on the metercovers. Then after the soaking period, the covers were taken out of thestripper vat singly, and worked over with either a brush or rag, as theindividual covers condition would seem to require. Then the covers arehandled again, each singly, to place them in a rinse tank, from whichthey are later removed and placed on a drain board, and when drained aredried with a suitable cloth in the hands of the operator. The time,labor, and breakage burden embodied in the hand cleansing method abovedescribed, is very great and these expensive maintenance factors haveresulted in the development of this 7 invention.

An object of the present invention, therefore, is to provide a machinefor washing and rinsing articles, such as the above referred to metercovers. thereby eliminating the old slow hand washing process.

Another object is to provide a machine which is continuously automaticin operation from the loading end to the discharge end thereof andserves to treat, rinse and dry as it operates.

Still another object is to provide a machine for treating glass metercovers by loading, spacing and feeding them to chemically treat, rinseand dry the same for complete cleansing.

Many other objects and advantages of the present invention will appearfrom the following detailed description, which refers to theaccompanying drawings by like reference numerals for each like part.

In the drawings:

Figure 1 is a perspective view showing the right-hand or loading end ofthe machine, the loading chute being broken away to conserve space.

Figure 2 is a perspective view showing the lefthand or discharge end ofthe machine, the discharge chute being broken away to conserve space.

Figure 3 is a perspective view showing the discharge end of the machine,the discharge chute removed so that essential features of the machinemay be seen.

Figure 4 is a perspective view taken from the loading end and somewhatabove the machine, showing particularly the conveyor means, the portionshaving openings curtained by strips of rubber, and showing some of thespray nozzles.

Figures 5 to 9 inclusive are fregmentary views taken at the loading endof the machine showing in particular the means for alternately stopping,starting, and subsequently spacing the covers in their movement into themachine; for example;

Figure 5 shows the first cover in the line of covers on the loadingchute being held in stopped position, this position, of course, alsoholding back all of the other covers on the chute;

Figure 6 shows (in dotted lines) the said first cover (mentioned as inFig. 5) as having been released from its stopped position and about tocontact the conveyor belt which is shown in dotted lines in the Fig. 5,while the mechanism is still holding back the rest of the covers,pending the accomplishment of the correct spacing time.

Figur 7 shows another cover having moved into first position, being heldtherein by a part of the mechanism while another part thereof is aboutto move down into position between the covers in first and secondposition, so that all of the covers except that one in first position,are held back by that particular part of the mechanism.

Figure 8 is a view showing the mechanism idle, and the driven shaft onwhich are mounted the two angularly formed or curved cam fingers,disengaged from contact with the members which stop, start and space thecovers on the conveyor at the loading end of the machine.

Figure 9 is a fragmentary perspective view,

Figure 10 is atop plan view of the invention,

the fiat lids which normally cover the main container and are set intothe top thereof, being removed to facilitateshowing the details or themechanism, and without the loading and discharge chutes, and,

Figure 11 is a combination sectional and elevational view taken on orabout the line lI-ll of the Fig. 10, showing the upper structure insection, the chemical or Oakite tank and the hot water tank in section,and the piping courses, motors, etc. shown in elevation tor clearerillustration.

Figure 12 is a fragmentary view showing partly in section and partly inelevation, the details of the structure at Y and Z in Figure 2, withoutthe insulating covering.

Referring in detail to the drawings and first I with particularreference to Figures 10 and 11,

there is illustrated one form of apparatus for practicing this inventioncomprising a main cabinet M, which is elongated from an open loadingend, see Fig. 1, to a discharge end, see Fig. 2. The loading endconnects with a suitable loading chute and feed control hereinafterdescribed.

The main cabinet it houses th conveyor assembly, the spray nozzleassemblies, namely, the chemical spray nozzle assemblies and the hotwater spray nozzle assemblies, the cabinet partitions which define theseveral stations, the rubber curtains, etc. while the other details ofthe devic are arranged exteriorly of the main cabinet it or beneath iton the base of the machine. The cabinet it is divided into severalstations or smaller units of operation, which, when taken. from theloading end of the machine, comprise the loading cabinet A, the chemicaltreating or Oakite spray cabinet B, the hot water rinse cabinet C, andthe drying cabinet D. (See Fig. 11.)

Dividing the cabinets A and B is the partition A. Dividing the cabinetsB and C is the par= tition B. And dividing the cabinets C and D is thepartition C. Each of these partitions A, B and C has a rectangularlyshaped opening providing access through from one cabinet to the otherfor the movement of the glass meter covers on the conveyor element 9when in mo tion. A slit, multi-piece rubber curtain marked 0', shown inFigure 11, covers each of the open-- ings O. A plurality of additionalsplit multipiece rubber curtains marked E are arranged in spaced apartrelation to each other just inside the entrance to the cabinet B. Aplurality of the same type of curtains F in the same spaced apartrelation are arranged just inside the entrance to the cabinet C, andtwoof the same type of curtains G are. arranged spaced apart from eachother within the cabinet D. These curtains 0', E, F, and G prevent thehot steam given off by the chemical or Oakite spray cabinet B, the hotwater spray cabinet C, and the hot moisture or drier cabinet D fromintermixing or getting out into the room containing the machine.

It will be noted that the partition A, B and C extend from the top ofthe cabinet it down to the bottom thereof, and in addition to theopening 0 are provided with a separation or break wher the conveyorelement 9 operates. .And similarly, it will be noted that two shorter 4partitions H are provided and extend from the bottom [0' of the cabinetl0, and each also have a separation or break to accommodate th lowercourse of the conveyor element 9, while the upper edge of said partitionH terminate Just beneath the upper course or saidconveyor element.

The separate or individual drain tanks [2, i3, i4, I5, I6 and 11 areformed from the arrangement of the bottom It of the cabinet ID, theshorter partitions H which extend between the said bottom I0, and theupper portion or the conveyor element 9, together with the lower portionof the partitions A, B, and C which partitions are also between the saidbottom It and the upper portion of th conveyor element.

The tank I2 receives simply condensation and Oakite drippings and drainsthrough the pipe i2 into the line i8 and thence back into the chemicaltank. The tank l3 receives chemical Oakite solution drippings from thecurtains E,

.and drains through the pipe l3 into the line 118 and back into thechemical or Oakite solution tank. The tank 84 receives Oakite solutionspray from the nozzle assemblies 22 and 23 and drains through the pipeit into the line l8 and back into the Oakite solution tank. The tank l5receives Oakite solution drippings from the curtains F and drainsthrough the pipe i5 into the line it and back into the Oakite solutiontank. The tank it receives hot water spray from the spray nozzleassemblies 24 and 25 and drains through the pipe 46 into the line 26 andpipe M to sewer or waste. The tank I! receives condensation anddrippings of hot water and drains through the pipe ll into the lin 20and pipe 2i to sewer or waste.

It will be noted that the cold water is conveyed to the machine orrather to a hot water tank hereinafter described, by a copper tube 2 l ashown by dotted lines in Figure 10, centrally disposed in the drain pipe2!, so that as the hot water from the tanks it and l! isdrained off, itis cooled by the incoming water through the copper tube before itreaches the sewer. This of course also serves to pre-heat the incomingwater.

The lids ill! are shown for the closure of the top of the cabinet it inthe upper left-hand portion of the Fig. 11. These lids it are simply arectangular sheet of heavy metal. They have fastened entirely aroundtheir periphery on the under side and even with the edge, a strip ofsponge rubber it or similar material, to keep the steam and water andOakite spray solution within the cabinet at all times.

The motor 26 (see Figs. 3 and 11) and its associated gear reduction unit27 (see Figs. 2, 3 and 11) actuate the sprocket chain 30 from the drivespur gear 29 on the drive shaft 28 of the gear reduction unit 21; Thesprocket chain 30 drives the driven spur gear 3! fixed on a shaft 32,which shaft carries fixedly mounted thereon (see left side of Fig. 3)the driven spur gear 33 engaging a sprocket chain 34, which in turnengages and drives spur gear 33, said gear 38' being keyed on theleft-hand end (see Fig. 3) of the driven shaft 35, which also has keyedto it intermediate its ends and in spaced relation from each other apair of identical spur gears 36 and 31 which in turn drive the conveyorelement assembly 9, which engages at the loading end of the machine apair of idler spur gears 39 and 40 keyed on the idler shaft 4| The motor26 is controlled from a switch box 42, and from this same switch box 42is started and controlled. the two immersion type heating elements 43mounted in the bottom wall of an angularly positioned hot water tank 44.This tank is mounted between two lower frame members,

45 of the machine base by means of a laterally placed angle iron 46 anda square rod 41. Electric power is supplied to the motor 28 through theelectric conduit 48, through the switch box 42, to the motor 26, seeFigure 2, while the flexible electric conduit 49 leads from the switchbox 42 to the thermostat control unit and through the flexible conduit49 to motor 25, see Figure 2. The flexible conduit 50 carries power fromthe switch box 42 to the thermostat control unit 5|, from which the twoflexible electric conduits 52 and 53 carry power to the two immersiontype heatingelements 43-for heating the water in the hot water tank 44.

Out of the top of the hot water tank 44 is an overflow line 54, shown inthe Fig. 2, and a safety relief valve 55 having a drain pipe 55 tosewer, in case of excessive heat in the water tank. Also out of the topof the hot water tank 44 is the hot water line 51 having a manualshut-01f valve 52 and a fllter and drain element 59, said hot water line51 leading upward to carry hot water to and through the spray nozzleassemblies 24 and 25. These spray nozzles being positioned above andbelow the upper course of the conveyor 3. g

The thermostat control element 5| may be set for any desired temperaturefor the hot water, and the water may thus be held at any desiredtemperature throughout the operating period of the machine. The valve 58may be closed to withhold water from the assemblies 24 and 25 in case ofcleaning or repairs. and for cleaning the filter element 59 whennecessary. Shut-off valves 60 and 6| are provided in the l-ine 51 justahead of the hot rinse water spray nozzle assemblies 24 and 25 toprovide for maintenance or cleaning, see Figure 2.

As will appear from reference to the Figs. 2, and 11, while therelatively heavy insulation material as at 62 is provided as a coveringfor the line 51 exteriorly of the machine, the same is omitted in theFigs. 10 and 11 in order to more clearly show the essential parts. Also,the insulation 44' covering the hot water tank 44 enables the water tobe heated and kept so for longer periods, while at the same timeminimizing the heat radiated off the tank into the room space.

In the Figs. 2, 3 and 11, there is shown a vent pipe 63 from the roof ofthe drying cabinet D. This is adapted to carry off moisture and fumesfrom the drying cabinet D before the final discharge of the covers ontothe discharge chute.

The Oakite or chemical spray mechanism is set in operation by turning onthe switch at the switch box 64, see Figures 1 and 2, which conveyspower through the flexible electric conduit 65 to the two thermostatcontrol elements 66 from which the electric power is carried through theflexible electric conduits 61 to the two immersion type heating elements68. These are the same as those numbered 43 and these elements 68 aremounted in fixed position on the side near the bottom of the chemical orOakite tank 69, so that the elongated U-shaped portion of each of theelements 63 is immersed in the Oakite solu tion, to thereby heat thesame. Two thermometer heat sensitive elements 10 are mounted on the sideof the tank 69 adapted for immersion contact in the chemical or Oakitesolution, and they are adapted for contact with the said thermostatcontrol elements 56 by means of relatively small wire easements Ill.

when the machine is to be operated. allow approximately 30 minutes forthe various elements to build up the required temperatures. Suitabletemperature for the hot water is between 160 F. and 190 F., whilesuitable temperature for the chemical or Oakite solution is between 160F. and 180 F.

Then turn on the switch ll, shown in Figure 2, which thus carries powerthrough the flexible electric conduit'12 to the motor 13. This motor byits belt 13 operates th Oakite solution pump 14, which pumps Oakitesolution from the tank 53 through the line 15 having a filter 15';thence through the by-pass line 16 having a relief valve 16 and throughthe line 'I'I having a pressure gauge 11' and a filter element 18,upward to supply Oakite solution to and through the spray nozzleassemblies 22 and 23 before described positioned below and above theupper course of the endless conveyor 9.

The by-pass line 16 comes into use only in case the pressure on the line11 is too great, and thus sends the solution back to the entrance to thepump by means of the relief valve I6.

The shut-off valve 19 in the line 19' may be opened for the purpose ofallowing the hot water from the line 51 to flush out the spray nozzleassemblies 22 and 23 when the machine is shut down after a run is made.The shut-off valves and 80' are provided in the line 11 just ahead ofthe spray nozzle assembly 22 and 23 to provide for maintenance orcleaning.

The shut-off valve 8| in the line l8 having the upwardly extending handl8 l is normally closed, but may be opened for the purpose of draininginto the sewer or waste line through the pipe I! the residue from theseparate drain tanks l2, l3,

l4 and IS on occasion.

Now, in the event that it is desired to flush out the spray nozzleassemblies 22 and 23 with hot water from the line 19, the shut-off valve82 having the upwardly extending handle 82' is closed to keep the hotwater from entering the chemical or Oakite solution tank 69, and theshut-off valve 8| is also closed to keep the hot water from running downthe pipe is into the sewer. Then, the shut-off valve I3 in the line 13'is opened, thus permitting the hot water to enter and flush through thespray nozzle assemblies 22 and 23 for cleansing. When the cleansingoperation is completed the valve 8| may be opened to drain the residueinto the sewer through th pipe 19, and then it is closed again fornormal operation of the machine. The valve 19 is also then closed toexclude the hot water from the Oakite spray elements, and the valve 82is again opened to permit the Oakite solution to return to the tank 69in normal operation. The shut-oil valve 83 havin the upwardly extendinghandle 83' may be opened on occasion to permit the complete draining ofthe Oakite tank 69 when the solution becomes old or diluted and must bereplaced with new solution.

An overflow opening 84 adjacent the top edge of the tank 69 leads intothe overflow line 85 where it is carried down into the'sewer through theline 36.

A screen 81 extending laterally and from the bottom to the top withinthe tank 69 is in fixed position as shown in Fig. 11, so as to withholdany foreign substance from entering the chemical pump 14 through theline 15 which draws the chemical solution to the pump through the pointat X adjacent the lower corner of the said tank 62, see Figure 11.

The conveyor belt 9 is comprised of the usual metal endless belt chain81 having rectangular openings therein to engage the spurs of the spurgears 86-41 and 3940 used in the device, and an endless or continuousseries of laterally arranged bar members 81', see Figs. 4 and 10,supports and carries along through the machine a plurality of glassmeter covers. A pair of longitudinally arranged angle iron track members88 provide means for guiding said covers through the center (between thesides) of the cabinet I0. A

pair of little rubber bumpers 89,see Figs. 3 and 4, are fixed oppositeeach other in the angle members 88, so as to guide the covers centrallyinto and out of the machine. The covers do not ride on the said trackmembers 88, but move along between them and are guided thereby.

In the Figs. 10 and 11 no insulation is shown around the chemical tank69, but it is normally insulated, and is so shown in the Figs. 1 and 2.Also, a cover is shown on said tank in the Figs. 1 and 2.

Fig. 12 is a fragmentary view showing partly in section and partly inelevation, the details of the structure at Y and Z in Fig. 2 inparticular, although in said Fig. 2 these details are shown covered witha casing of insulating material.

'Now, in the top of the T fitting 90 shown in the Fig. 12, is shown abushing 9| threadably engaged therein, and this bushing supportsintegrally and flush with its top face an elongated thimble-like member92 known as a thermometer well. This thermometer well 02 is adapted toreceive a thermometer 93 of elongated capsule-like shape,

this thermometer 93 being connected by means of hot water and the Oakitesolution temperature may be gauged by this arrangement, because thethermometer well is in direct immersion therein and the temperatures areconveyed instantly and constantly to the thermometer.

The lower chemical spray nozzle assembly 22 is mounted on the inner endof the horizontally arranged feed pipe 22', see Fig. 4, centrallybetween the sides of the cabinet I0, see Figs. 4 and i0, and between theupper and lower courses of the conveyor element, see Fig. 11, for thepurpose of directing a strong and heavy Oakite spray upward through theconveyor onto the irmer surfaces of the glass covers 95 above.

The upper chemical spray nozzle assembly 23 is mounted on the inner endof the horizontally arranged feed pipe 23', see Figs. 4 and 11, and thetubes 900 are of soft copper to enable said tubes to be readilypositioned by bending, there by enabling the nozzles at the ends thereofto direct the sprays of stream where desired. While the short pipes I05carrying the relatively short crossarms I02, which mount the spraynozzles, are swingably mounted on a double elbow arrangement fl03 toenable the spray stream to be directed as desired. All of the nozzles inthe invention may be of any suitable type to effect'required results.

The lower hot water rinse spray nozzle assembly 24 is similar to thelower chemical spray nozzle assembly 22 and is mounted on a similar feedpipe 24'. This assembly is for the purpose of directing a strong hotwater spray upwardly onto the inner surfaces of the glass covers above.

The spray nozzle assembly 25 is mounted on the inner end of thehorizontally arranged feed pipe 25', see Figs. 4 and 10, and the tubesI04 are of soft copper like the tubes I00 and for the same reason. Thisassembly 25 directs the hot water spray onto the outside surfaces of theglass covers 98 passing beneath.

The initial step of loading the glass covers 98 by feeding them to theloading station A from a loading chute 91 onto the conveyor 9 in spacedrelation is illustrated in Figures 5 through 9. Special means toaccomplish the spaced apart feed of the covers is utilized and comprisesa sleeve I05 from which are formed two curved angular cam fingers I06and I01, see Figure 5. These fingers rotate as the conveyor sprocketshaft revolves with the sleeve I05 and consecutively engage with thehooked ends I08 and we of a pivoted cover starting or releasing memberH0 and a pivoted cover stopping and spacing member III.

As illustrated in Fig. 5 a cover as is held in stopped position, untilthe cam finger E06 ac tuates member H0 and releases the cover to thedotted line position shown in Fig. 6. The stop member III still holdsthe next cover back until the cam finger I01, which follows the cycle ofcam finger I06 raises the member HI and the next cover comes intoposition as in Figure 7.

OPERATION The detailed operation of the present machine should beapparent from the foregoing description, but briefly summarizing thesame, the covers 96 are fed to the part of the conveyor 8 in station Aat spaced intervals from the chute til. It is of course understood thatthe necessary switches 42 and H have been closed to start the conveyorand the pumps to the spray nozzles.

From the loading station A the covers are conveyed through opening 0 tostation B and treated and sprayed with a chemicalsolution, such asOakite from the tank 69 and on to the rinsing station C. At station Cthe spray nozzles 24 and 25 spray the covers 38 both inside and out withhot water from tank 64 and then proceed to the drier station D fromwhich they are discharged thoroughly cleansed.

Below each station are the drain tanks which have drains to carry thechemical solution back to the chemical tank 69 and which carry the rinsewater off to the sewer or waste line.

As explained in the description the valves and conduits are arranged toby-pass fiuid to clean out the spray nozzles and to flush out themachine after extensive use.

Without further description it is believed that this invention isclearly understandable from the foregoing and while the apparatus hasbeen specifically illustrated anddescribed, it is to be expresslyunderstood that other combinations and arrangements of parts may be usedby others in practicing this invention without departing from the scopehereof. To determine the scope of this invention reference should be hadto the appended claims.

What is claimed is:

1. Apparatus for treating articles by washing, rinsing and drying thesame comprising a main washing and rinsing chamber, an endless conveyorhaving an upper course of skeleton form travelling the length of saidchamber, an article loading chute for feeding the articles one at a timein spaced apart relation onto said conveyor, a chemical spray assemblyarranged to spray the articles from both top and bottom as they areconveyed through the chamber, a chemical solution supply tank, a supplyline therefrom to said chemical spray assembly, a return line to saidtank from the chamber, a pump for pumping the fluid to the sprayassembly and a by-pass around the pump to return surplus chemicalsolutions to the suction side of the pump when the pump is operating andthe spray assembly is not discharging.

2. Apparatus for washing electric meter covers and the like comprising asupporting structure, an elongated chamber on the upper part of thestructure, a plurality of vertical spaced apart partitions with openingscovered by flexible curtains therein transverse the chamber for thepassage of the courses of a conveyor belt and articles thereon, eachpartition serving as an endwall for a loading cabinet, a washingcabinet, 9. rinsing cabinet and a drier cabinet, a drain tank below eachof the said cabinets, a spray assembly mounted in the washing cabinet, atank connected to said spray assembly by conduit means, an electricallydriven pump for forcing fluid from the tank to the spray assembly,electric heating elements in said tank, an electric switch control forsupplying electric current to drive said pump and energize said heatingelements, a second spray assembly mounted in said rinsing cabinet, awater tank connected to said second spray assembly by conduit means, asecond electrically driven pump for forcing water from the tank to thesecond spray assembly, electric heat ing elements in said water tank, asecond electric switch control for supplying current to drive the secondpump and to simultaneously energize the said heating elements, andthermostat means operatively associated with each of said electricswitch controls adapted to cut out the heating elements in each tank ata predetermined temperature.

3. The apparatus described in claim 2, wherein each of said sprayassemblies include tubes formed of bendable material, whereby the samemay be bent to direct the spray in various directions against the coversbeing washed and rinsed.

4. The apparatus described in claim 2, wherein 10 the openings in thesaid partitions are in line with a plurality of flexible sheets ormaterial removed from said openings serving as baiiies to prevent escapeof fumes and steam from the washing and rinsing cabinets.

5. Apparatus for washing, rinsing and dryin glass covers for electricmeters and the like comprising an elongated main chamber having aloading end and a discharge end, a plurality of centrally aperturedpartitions transverse the said chamber, loading, washing, rinsing anddrying stations defined between the said partitions, flexible closureshanging over each of the partition apertures, and an endless conveyorhaving both of its flights travelling through said partition aperturesand conveying the covers loaded thereon through the apertures from one01' said stations to the other, said conveyor being an endless conveyorformed of transversely arranged spaced apart bars and elongated guidemeans.

extending along each side slightly above the edge 01' the upper courseof the conveyor, said guides having rubber bumpers to prevent breakageoi the glass covers being treated.

MERLIN E. BARBER.

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